带有webpack的独立块文件

时间:2017-09-29 11:40:08

标签: javascript webpack webpack-2 commonschunkplugin

我正在构建一个组件库,我正在使用Webpack捆绑它。有些组件只依赖于我编写的html模板,css和JavaScript,但有些组件需要外部库。

我想要实现的是vendor.js 可选,如果您要使用的组件需要它,则包括

例如,如果用户只需要一个没有供应商依赖关系的组件,那么使用只包含我自己的代码的main.bundle.js就足够了。

在我的index.js中,我有以下导入:

import { Header } from './components/header/header.component';
import { Logotype } from './components/logotype/logotype.component';
import { Card } from './components/card/card.component';
import { NavigationCard } from './components/navigation-card/navigation-card.component';
import { AbstractComponent } from './components/base/component.abstract';
import { Configuration } from './system.config';

import 'bootstrap-table';

import './scss/base.scss';

所有这些导入都是我自己的,期待bootstrap-table

我已经像这样配置了Webpack:

const webpack = require('webpack');

const path = require('path');

const ExtractTextPlugin = require('extract-text-webpack-plugin');

const extractScss = new ExtractTextPlugin({
    filename: "[name].bundle.css"
});

module.exports = {
    entry:  {
        main: './src/index.ts'
    },
    output: {
        path: path.resolve(__dirname, 'dist/release'),
        filename: "[name].bundle.js",
        chunkFilename: "[name].bundle.js"
    },
    plugins: [
        new webpack.optimize.CommonsChunkPlugin({
            name: 'vendor', // Specify the common bundle's name.
            minChunks: function (module) {
                // Here I would like to tell Webpack to give 
                // each bundle the ability to run independently
                return module.context && module.context.indexOf('node_modules') >= 0;
            }
        }),
        extractScss
    ],
    devtool: "source-map",
    resolve: {
        // Add `.ts` as a resolvable extension.
        extensions: ['.webpack.js', '.web.js', '.ts', '.js', '.ejs']
    },
    module: {
        rules: [
            // All files with a '.ts' extension will be handled by 'awesome-typescript-loader'.
            { test: /\.ts?$/, exclude: /node_modules/, loader: "awesome-typescript-loader" },

            // All output '.js' files will have any sourcemaps re-processed by 'source-map-loader'.
            { enforce: "pre", test: /\.js$/, loader: "source-map-loader" },

            // Allows for templates in separate ejs files
            {test: /\.ejs$/, loader: 'ejs-compiled-loader'},

            {
                test: /\.scss$/,
                use: extractScss.extract({
                use: [{
                    loader: 'css-loader', options: {
                        sourceMap: true
                    }
                }, {
                    loader: 'sass-loader', options: {
                        soureMap: true
                    }
                }]
            })}
        ]
    }
}

这会产生两个.js个文件和一个.css个文件。但是,webpacks常用模块加载功能驻留在vendor.js中,如果我不首先包含供应商,则会导致我的主要不可用,并且并不总是需要它。

总而言之,如果用户只需要页脚(没有外部依赖项),这就足够了:
    <script src="main.bundle.js"></script>

如果用户想要使用具有外部依赖关系的表,则需要包括:
    <script src="vendor.js"></script>
    <script src="main.bundle.js"></script>

现在,只包括main.bundle.js给了我这个错误:
Uncaught ReferenceError: webpackJsonp is not defined

我知道在Webpack配置中创建供应商块后,我可以通过添加它来提取所有常用功能:

new webpack.optimize.CommonsChunkPlugin({
    name: 'common'
})

但是这种方法仍然要求用户包含两个.js文件。

我该如何实现这一目标?当我不像上面那样提取常见模块时,它似乎只有2 kb不同,这对我没问题。

1 个答案:

答案 0 :(得分:0)

事实证明,如果你能够做一些手工工作并且真正理解Webpack的作用(我没有做过),这很容易做到。我这样解决了:

const webpack = require('webpack');

const path = require('path');

const ExtractTextPlugin = require('extract-text-webpack-plugin');

const extractScss = new ExtractTextPlugin({
    filename: "[name].bundle.css"
});

module.exports = {
    entry:  {
        main: './src/index.ts',
        vendor: './src/vendor/vendor.ts'
    },
    output: {
        path: path.resolve(__dirname, 'dist/release'),
        filename: "[name].bundle.js",
        chunkFilename: "[name].bundle.js"
    },
    plugins: [
        extractScss
    ],
    devtool: "source-map",
    resolve: {
        // Add `.ts` as a resolvable extension.
        extensions: ['.webpack.js', '.web.js', '.ts', '.js', '.ejs']
    },
    module: {
        rules: [
            // All files with a '.ts' extension will be handled by 'awesome-typescript-loader'.
            { test: /\.ts?$/, exclude: /node_modules/, loader: "awesome-typescript-loader" },

            // All output '.js' files will have any sourcemaps re-processed by 'source-map-loader'.
            { enforce: "pre", test: /\.js$/, loader: "source-map-loader" },

            // Allows for templates in separate ejs files
            {test: /\.ejs$/, loader: 'ejs-compiled-loader'},

            {
                test: /\.scss$/,
                use: extractScss.extract({
                use: [{
                    loader: 'css-loader', options: {
                        sourceMap: true
                    }
                }, {
                    loader: 'sass-loader', options: {
                        soureMap: true
                    }
                }]
            })}
        ]
    }
}

vendor.ts中,我只需导入我拥有的任何供应商依赖项:

import 'jquery';
import 'bootstrap-table';

这导致两个不同的文件,都有Webpacks引导逻辑。

希望这有助于某人。